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1. Weigh 9 g ultrapure NaCl dried at 110 0C for 30 min.

2. Transfer NaCl in a clean 1 L volumetric flask using a funnel.

3. Wash the funnel with 0,9 L demineralized water.

4. Put the flask in a thermostat and maintain 30 min at 20 0C.

5. Add demineralized water up to the mark.

6. Stir vigorously and transfer in a clean bottle with stopper.

7. Add a label with necessary information.

I supposed that you think to a 0,9 % NaCl solution.

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10y ago

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